Year	Z-score
1996-01-01	8.075450000000000
1997-01-01	9.507860000000000
1998-01-01	6.679950000000000
1999-01-01	10.606600000000000
2000-01-01	14.214200000000000
2001-01-01	12.933100000000000
2002-01-01	9.445650000000000
2003-01-01	7.204110000000001
2004-01-01	10.883000000000000
2005-01-01	12.129100000000000
2006-01-01	15.403100000000000
2007-01-01	16.316300000000000
2008-01-01	13.206500000000000
2009-01-01	10.219200000000000
2010-01-01	14.009900000000000
2011-01-01	14.310300000000000
2012-01-01	14.659600000000000
2013-01-01	15.706200000000000
2014-01-01	15.806800000000000
2015-01-01	15.757900000000000
2016-01-01	15.331900000000000